Integrating old lenses into new, powerful DSLR or mirrorless cameras seems counterintuitive. Why would anyone do that? The simple answer is that many older lenses can capture images that have that elusive quality known as character. For photographers or videographers looking to create unique images that express their personal style, character can be even more important than resolution values, corner-to-corner sharpness, and other benefits of the near-perfect lenses that are widely available today. The imperfections and aberrations of older lenses are the very strengths that differentiate them from modern lenses. Additionally, a fully mechanical lens is likely to take longer and be cheaper to repair than modern focus-by-wire lenses. Old lenses also allow you to change camera systems or reti.
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